Antifriction-alloy.



UNITED STATES PATENT onnron.

ENRIQUE A. TOUCEDA, F ALBANY, NEW YORK.

ANTIFRIGTION-ALLOY.

Specification of Letters Patent. Paten'ged Sept 21, 1909,

Application filed January 6, 1909. Serial No. 470,932.

No Drawing.-

To all whom it may concern:

Be it known that I, ENRIQUE A. ToUoEnA, a citizen of the United States,residing at Albany, county of Albany and State of New York, haveinvented certain new and useful Improvements in Antifriction Alloys, ofwhich the following is a specification.

This invention relates to the class of alpotassium cyanid, which acts asa flux and which also serves to protect the molten metal from oxidizingagencies. After the cadmium has reached a temperature of about 150degrees Fahrenheit above its melting point, the magnesium is, by meansof a pair of tongs'or other suitable apparatus, thrust quickly downthrough the flux, and held immersed in the molten cadmium until themagnesium is also melted, after which the molten mass of metal is runoff .into suitable molds in the usual manner.

I do not wish to be limited to the foregoing method of producing myimproved alloy, as other methods may be employed without 'depa-rtingfromthe spirit of my invention.

An alloy produced in accordance with my invention has a very fine grain,and is readily adaptable,by changing the relative proportions of cadmiumand magnesium, to the various conditions of load, shock and speed ofrotation to be met by hearing metals under diflierent conditions of use.I have found this alloy containing from one-half of one per cent. to twoand one-half per cent. of magnesium to be very useful under ordinaryconditions, such an alloy being both hard and tough,and well adapted tosustain heavy loads, while ossessing antifriction qualities of a highegree.

Magnesium in proportions less than three and one-half per cent. impartsgreat hardness to cadmium without destroying or materially reducing themalleabilityor ductility of the cadmium. Less than one-half of one percent. of magnesium can be advantageously used whcre the load is veryheavy, the rotary speed high, and the hearing not subjected to severeshocks. When the load is constant and light, and the speed high, theproportion of magnesium may be increased to five per cent., or evenmore, the resultant alloy being more brittle and extremely hard.

I do not wish to be limited to a bearing composed of an alloy containingonly cadmium and magnesium, as I consider within the scope of myinvention any bearing com posed of an alloy wherein a cadmiumconstituent is hardened by a magnesium constituent.

What I claim as new and desire to secure by Letters Patent is 1. Anantifriction bearing composed of an alloy containing cadmium andmagnesium.

2. An antifriction bearing composed of an alloy containing a relativelylarge proportion of cadmium and a relatively small proportion ofmagnesium.

3. An antifriction bearing composed of an alloy containing cadmiumtoughened and hardened by the presence of magnesium.

4. An antifriction bearing composed of an alloy'containing substantiallythree and one half per cent. of magnesium and a relatively largeproportion of cadmium.

5. An alloy containing a relatively large proportion of cadmium and arelatively small proportion of magnesium.

6. An alloy containing substantially three and one-half per cent. ofmagnesium and a relatively large proportion of cadmium.

In testimony whereof, I have hereunto set my hand this 28th day of Dec.1908.

ENRIQUE A. TOUCEDA.

Witnesses:

JAooB AoKER, A GUSTUS J. RIEGEL.

